Ah, OK. So the long side combo is really coming out of a Natural Spin Turn with Back Lock x2 or Double Back Lock (not sure which and if they're different) / 4-6 Reverse Turn / Double Reverse Spin / Drag Hesitation / Back Lock / Open (or Closed) Impetus. Now that sounds like about enough stuff to cover a long side. Just getting things clear in my mind.
phil.samways, "intermediate level" can mean different things to different people.

Does that mean syllabus or open? I generally think of intermediate as about silver syllabus, maybe some gold syllabus. I see SocialDancer has given a bunch of suggestions using open level figures, so I'll go with what I know better and suggest syllabus options. I don't know much open stuff and certainly not as well as others. Oh, and yes, the Alex Moore book is actually titled simply _Popular Variations_. Lots of combinations and figures, but the descriptions aren't always helpful, so they may be more useful if you already know the figures involved. It's almost all open stuff although there are syllabus figures included in there as well.
If you want to keep the Drag Hesitation and eliminate only the Back Lock following it, you could use an Outside Change, probably overturned. You could then do maybe 1-3 Natural Turn and Open/Closed Impetus in the corner, or end the Outside Change in PP and you have the option of doing that or adding in a Chasse from PP first. If you want to drop the Drag Hesitation, too, hmm, I'm not too sure. My personal preference for using a Double Reverse Spin is DRS x2 / Contra Check, but that doesn't quite give you the travelling you said you're generally good at. Hmm, well, a DRS can be followed by another reverse turn so what about a Fallaway Reverse Slip Pivot? That travels more down LOD. Still need to follow that with some reverse type move though. Hmm, I guess something we learned in class like Progressive Chasse to R, Outside Change could get you back to the wall direction, overturning as necessary, then follow with like 1-3 Natural / Open or Closed Impetus.
If your coach asks for your input and gave you suggestions, but you didn't like them, why not tell him so? You should be working together and I'm sure he wants you to be comfortable with the combinations you're going to dance. If you don't particularly like his suggested change, why not ask him if he has other ideas you could try instead? Professionals who work with you are going to be able to do a lot better than us amateurs who are just guessing at figures that might work for you.

Anyway, I hope this is of some help.
--
James Marshall
marshall@astro.umd.edu http://www.astro.umd.edu/~marshall